West Ham have appointed David Moyes as their new manager.
The former Everton and Manchester United boss replaces Slaven Bilic, who was sacked on Monday with the club in the Premier League relegation zone.
Moyes has been out of work since May, when he resigned as Sunderland manager after the club's relegation to the Championship.
Hammers joint chairman David Sullivan said the 54-year-old Scot is "the right man to turn things around".
He added: "We need somebody with experience, knowledge of the Premier League and the players in it, and we believe David can get the best out of the players.
"He is highly regarded and respected within the game and will bring fresh ideas, organisation and enthusiasm.
"He proved with Everton that he has great qualities and we feel that West Ham United is a club that will give David the platform to display those qualities again."
Moyes' first game in charge will be at Watford in the Premier League on 19 November.
Related article: Slaven Bilic: West Ham Sack Manager With Team In The Relegation Zone
What does Moyes face at West Ham?
The Hammers are 18th, having won just two Premier League matches in 2017-18 - and lost their first three league games of the campaign.
Bilic spent a reported £42m on players in the summer - including forward Marko Arnautovic from Stoke City for a club record £20m and former Manchester United striker Javier Hernandez from Bayer Leverkusen for £16m.
But West Ham have taken just nine points from 11 league matches, conceding 23 goals.
Following the Watford match, West Ham host Leicester City and go to Everton, before a difficult run in December which brings league games against leaders Manchester City, last season's champions Chelsea and Arsenal.
Later in the month, the Hammers travel to face the Gunners in the Carabao Cup quarter-finals.
|West Ham's forthcoming fixtures|
|19 November: Watford (a); 24 November: Leicester City (h); 29 November: Everton (a)|
|3 December: Manchester City (a); 9 December: Chelsea (h); 13 December: Arsenal (a)|
What will Moyes bring to the Hammers?
Moyes, who started his managerial career at Preston North End, was voted LMA Manager of the Year three times during an 11-year spell at Everton from 2002 to 2013. In 11 full seasons, the Toffees finished in the top eight nine times.
He succeeded Sir Alex Ferguson as Manchester United boss on his fellow Scot's recommendation when he retired after a trophy-laden 26 years in charge at Old Trafford.
Related article: West Ham to confirm David Moyes as new manager
But despite signing a six-year deal with the then Premier League champions in 2013, he was sacked 10 months later with United seventh in the table.
Moyes went on to manage Real Sociedad in Spain but was sacked by the La Liga club after a year in charge in November 2015.
He took over at Sunderland in July 2016 before quitting in May 2017 after the Blacks Cats were relegated, having finished bottom of the Premier League.
Former West Ham striker Dean Ashton told BBC Radio 5 live that Moyes was "the safe option if you're thinking about grinding out until the end of the season and safety".
But he added: "As a player, David Moyes coming in wouldn't inspire me."
During his Black Cats reign, Moyes also attracted controversy for telling BBC reporter Vicki Sparks she might "get a slap" in March, leading to a Football Association charge for improper conduct and a £30,000 fine.
He said he "deeply regrets" making the comment and later apologised to Sparks, who did not make a complaint.
Source: BBC Sport